package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.SetmealDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.entity.SetmealDish;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.SetmealDishService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

/**
 * 套餐管理
 */
@RestController
@RequestMapping("/setmeal")
public class SetmealController {
    @Autowired
    private SetmealService setmealService;
    @Autowired
    private CategoryService categoryService;

    @Autowired
    private SetmealDishService setmealDishService;

    /**
     * 新增套餐
     * @param setmealDto
     * @return
     */

    @PostMapping
    public R<String> save(@RequestBody SetmealDto setmealDto){
        setmealService.save(setmealDto);

        return R.success("新增套餐成功");
    }

    /**
     * 套餐分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name){
        //分页构造器
        Page<Setmeal> pageInfo =new Page<>(page,pageSize);//要从mp 开始看这个是什么
//       Page<Setmeal> pageInfo =new Page<Setmeal>(); 这两个有什么区别吗

        Page<SetmealDto>  dtopage =new Page<>();//解决categoryName

        LambdaQueryWrapper<Setmeal> queryWrapper =new LambdaQueryWrapper<>();
        //添加查询条件，根据name进行like模糊查询
        queryWrapper.like(name != null,Setmeal::getName,name);
        //添加排序条件，根据更新时间降序排列
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);
        setmealService.page(pageInfo,queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo,dtopage,"records");
        List<Setmeal> records=pageInfo.getRecords();

        List<SetmealDto> list=records.stream().map((item)->{
            SetmealDto setmealDto =new SetmealDto();
            BeanUtils.copyProperties(item,setmealDto);//拷贝
            //分类id
            Long categoryId=item.getCategoryId();
            //根据分类id查询分类对象(需要分类的Service,导入CategoryService
            Category category = categoryService.getById(categoryId);
            if(category != null){
                //分类名称
                String categoryName = category.getName();
                setmealDto.setCategoryName(categoryName);
            }
            return setmealDto;
        }).collect(Collectors.toList());
        dtopage.setRecords(list);//看不太懂，

        return R.success(dtopage);

    }

    /**
     * 删除套餐
     * @param ids
     * @return
     */

    public R<String>  delete(@RequestParam List<Long> ids){
        setmealService.removeWithDish(ids);
        return R.success("套餐成功删除");
    }

    @GetMapping("/list")
    public R<List<Setmeal>> list(Setmeal setmeal){
        LambdaQueryWrapper<Setmeal> queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.eq(setmeal.getCategoryId() !=null,Setmeal::getCategoryId,setmeal.getCategoryId());
        queryWrapper.eq(setmeal.getStatus() !=null,Setmeal::getStatus,setmeal.getStatus());
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        List<Setmeal> list = setmealService.list(queryWrapper);
        return R.success(list);
    }
}
